details: https://hg.nginx.org/nginx/rev/c263f9ffa1fd
branches:
changeset: 8025:c263f9ffa1fd
user: Maxim Dounin <mdounin@mdounin.ru>
date: Mon May 30 21:25:35 2022 +0300
description:
All non-unique input headers are now linked lists.

The ngx_http_process_multi_header_lines() function is removed, as it is
exactly equivalent to ngx_http_process_header_line(). Similarly,
ngx_http_variable_header() is used instead of ngx_http_variable_headers().

diffstat:

src/http/ngx_http_request.c | 38 ++++++++------------------------------
src/http/ngx_http_variables.c | 33 ++++-----------------------------
2 files changed, 12 insertions(+), 59 deletions(-)

diffs (158 lines):

diff -r ef6a3a99a81a -r c263f9ffa1fd src/http/ngx_http_request.c
--- a/src/http/ngx_http_request.c Mon May 30 21:25:33 2022 +0300
+++ b/src/http/ngx_http_request.c Mon May 30 21:25:35 2022 +0300
@@ -22,8 +22,6 @@ static ngx_int_t ngx_http_process_header
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_process_unique_header_line(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
-static ngx_int_t ngx_http_process_multi_header_lines(ngx_http_request_t *r,
- ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_process_host(ngx_http_request_t *r,
ngx_table_elt_t *h, ngx_uint_t offset);
static ngx_int_t ngx_http_process_connection(ngx_http_request_t *r,
@@ -164,7 +162,7 @@ ngx_http_header_t ngx_http_headers_in[]
#if (NGX_HTTP_X_FORWARDED_FOR)
{ ngx_string("X-Forwarded-For"),
offsetof(ngx_http_headers_in_t, x_forwarded_for),
- ngx_http_process_multi_header_lines },
+ ngx_http_process_header_line },
#endif

#if (NGX_HTTP_REALIP)
@@ -197,7 +195,7 @@ ngx_http_header_t ngx_http_headers_in[]
#endif

{ ngx_string("Cookie"), offsetof(ngx_http_headers_in_t, cookie),
- ngx_http_process_multi_header_lines },
+ ngx_http_process_header_line },

{ ngx_null_string, 0, NULL }
};
@@ -1742,10 +1740,10 @@ ngx_http_process_header_line(ngx_http_re

ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset);

- if (*ph == NULL) {
- *ph = h;
- h->next = NULL;
- }
+ while (*ph) { ph = &(*ph)->next; }
+
+ *ph = h;
+ h->next = NULL;

return NGX_OK;
}
@@ -1851,13 +1849,10 @@ ngx_http_process_user_agent(ngx_http_req
{
u_char *user_agent, *msie;

- if (r->headers_in.user_agent) {
- return NGX_OK;
+ if (ngx_http_process_header_line(r, h, offset) != NGX_OK) {
+ return NGX_ERROR;
}

- r->headers_in.user_agent = h;
- h->next = NULL;
-
/* check some widespread browsers while the header is in CPU cache */

user_agent = h->value.data;
@@ -1919,23 +1914,6 @@ ngx_http_process_user_agent(ngx_http_req
}


-static ngx_int_t
-ngx_http_process_multi_header_lines(ngx_http_request_t *r, ngx_table_elt_t *h,
- ngx_uint_t offset)
-{
- ngx_table_elt_t **ph;
-
- ph = (ngx_table_elt_t **) ((char *) &r->headers_in + offset);
-
- while (*ph) { ph = &(*ph)->next; }
-
- *ph = h;
- h->next = NULL;
-
- return NGX_OK;
-}
-
-
ngx_int_t
ngx_http_process_request_header(ngx_http_request_t *r)
{
diff -r ef6a3a99a81a -r c263f9ffa1fd src/http/ngx_http_variables.c
--- a/src/http/ngx_http_variables.c Mon May 30 21:25:33 2022 +0300
+++ b/src/http/ngx_http_variables.c Mon May 30 21:25:35 2022 +0300
@@ -27,8 +27,6 @@ static ngx_int_t ngx_http_variable_heade

static ngx_int_t ngx_http_variable_cookies(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data);
-static ngx_int_t ngx_http_variable_headers(ngx_http_request_t *r,
- ngx_http_variable_value_t *v, uintptr_t data);
static ngx_int_t ngx_http_variable_headers_internal(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data, u_char sep);

@@ -178,7 +176,7 @@ static ngx_http_variable_t ngx_http_cor
#endif

#if (NGX_HTTP_X_FORWARDED_FOR)
- { ngx_string("http_x_forwarded_for"), NULL, ngx_http_variable_headers,
+ { ngx_string("http_x_forwarded_for"), NULL, ngx_http_variable_header,
offsetof(ngx_http_request_t, headers_in.x_forwarded_for), 0, 0 },
#endif

@@ -327,10 +325,10 @@ static ngx_http_variable_t ngx_http_cor
{ ngx_string("sent_http_transfer_encoding"), NULL,
ngx_http_variable_sent_transfer_encoding, 0, 0, 0 },

- { ngx_string("sent_http_cache_control"), NULL, ngx_http_variable_headers,
+ { ngx_string("sent_http_cache_control"), NULL, ngx_http_variable_header,
offsetof(ngx_http_request_t, headers_out.cache_control), 0, 0 },

- { ngx_string("sent_http_link"), NULL, ngx_http_variable_headers,
+ { ngx_string("sent_http_link"), NULL, ngx_http_variable_header,
offsetof(ngx_http_request_t, headers_out.link), 0, 0 },

{ ngx_string("limit_rate"), ngx_http_variable_set_limit_rate,
@@ -807,22 +805,7 @@ static ngx_int_t
ngx_http_variable_header(ngx_http_request_t *r, ngx_http_variable_value_t *v,
uintptr_t data)
{
- ngx_table_elt_t *h;
-
- h = *(ngx_table_elt_t **) ((char *) r + data);
-
- if (h) {
- v->len = h->value.len;
- v->valid = 1;
- v->no_cacheable = 0;
- v->not_found = 0;
- v->data = h->value.data;
-
- } else {
- v->not_found = 1;
- }
-
- return NGX_OK;
+ return ngx_http_variable_headers_internal(r, v, data, ',');
}


@@ -835,14 +818,6 @@ ngx_http_variable_cookies(ngx_http_reque


static ngx_int_t
-ngx_http_variable_headers(ngx_http_request_t *r,
- ngx_http_variable_value_t *v, uintptr_t data)
-{
- return ngx_http_variable_headers_internal(r, v, data, ',');
-}
-
-
-static ngx_int_t
ngx_http_variable_headers_internal(ngx_http_request_t *r,
ngx_http_variable_value_t *v, uintptr_t data, u_char sep)
{
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